CN107607048B - A kind of optical lever measuring device - Google Patents
A kind of optical lever measuring device Download PDFInfo
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- CN107607048B CN107607048B CN201710853526.8A CN201710853526A CN107607048B CN 107607048 B CN107607048 B CN 107607048B CN 201710853526 A CN201710853526 A CN 201710853526A CN 107607048 B CN107607048 B CN 107607048B
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Abstract
The invention discloses a kind of optical lever measuring devices, belong to physical experiment apparatus technical field, including bottom plate, top plate, laser, support leg, the first reflective mirror being parallel to each other and the second reflective mirror, reflecting mirror, with graduated display screen and support, the support is fixed on first reflective mirror, trunnion axis is equipped between the laser and first support, described laser one end is fixedly connected with the support leg, and the other end is Laser emission end；The reflecting mirror is installed in one perpendicular on the column of the bottom plate, the lower part of the column is fixedly installed with worm gear, the worm screw being meshed with the worm gear is additionally provided on the bottom plate, the worm screw is horizontally disposed and its end is pierced by the lower part of the display screen, is installed with adjusting knob on the traversing through end of the worm screw.Operation of the present invention and convenient reading, and the process of the variation read when object length variation can be observed；Measurement efficiency is high；It occupies little space, is conducive to the space utilization rate for improving laboratory.
Description
Technical field
The invention belongs to physical experiment apparatus technical field more particularly to a kind of optical lever measuring devices.
Background technique
The minor alteration amount of measurement length, such as the poplar with pulling method measurement material are frequently necessary in various scientific experiments
Family name's modulus is exactly wherein common one kind, and traditional pulling method measurement metal Young's modulus is using feed rod rod principle, by metal
Silk is passed through specular light lever amplification by the Chroococcus minutus under pulling force effect, and the telescope by being placed in distant place and scale carry out
Observation.
But the measurement method of above-mentioned optical lever has the disadvantage in that
One, the multiple of the amplification of optical lever is less than normal.The enlargement ratio of optical lever is directlyed proportional at a distance from mirror surface and scale
, mirror surface is bigger at a distance from scale, and the enlargement ratio of optical lever is bigger, and measurement accuracy is higher, but due to the experiment of university
The space of room is limited, general namely one to two meters of distance, the steel wire of such diameter 0.3mm or so, in the effect of a Newton force
Under, finally only half millimeter or so of the reading variation on scale, measurement accuracy is not high.
Two, it is inconvenient to operate and read, and modulus measurer adjusts pulling force parameter and observation scale numerical value different
Position, experimenter need to move back and forth at both ends, the variation read when influencing conventional efficient, and cannot observe tension variations
Process.
Three, telescope adjustment is difficult, needs long time to adjust telescope to make scale present in telescope
Clearly as, or even adjust telescope time be far longer than the time specifically measured.
Four, it is big to occupy lab space, is unfavorable for the utilization efficiency in raising laboratory.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of optical lever measuring device, measurement accuracy is high；Operation and reading
Number is convenient, and can observe the process of the variation read when object length variation；Measurement efficiency is high；It occupies little space, is conducive to
Improve the space utilization rate in laboratory.
In order to solve the above technical problems, the technical scheme is that a kind of optical lever measuring device, including bottom plate, top
Plate, laser, support leg, the first reflective mirror arranged in parallel and the second reflective mirror, reflecting mirror, with graduated display screen
And support, first reflective mirror, second reflective mirror and the display screen are vertically arranged on the bottom plate, described
Top plate is arranged between first reflective mirror and the top of the second reflective mirror, and the reflective surface of first reflective mirror and second is instead
The reflective surface of light microscopic is oppositely arranged；
The support is fixedly mounted on first reflective mirror, and level is equipped between the laser and the support
Axis, described laser one end are fixedly connected with the support leg, and the other end is Laser emission end, the support leg and laser hair
The two sides that end is located at first reflective mirror are penetrated, the Laser emission end and the reflective surface of first reflective mirror are located at phase
Same side, when the support leg vertically moves, the laser can be rotated around the trunnion axis；
The reflecting mirror is installed in one perpendicular on the column of the bottom plate, and the reflecting mirror is close to second reflective mirror
Setting, on the bottom plate, the lower part of the column is fixedly installed with worm gear, also sets on the bottom plate for the column rotational installation
There is a worm screw being meshed with the worm gear, the worm screw is horizontally disposed and its end is pierced by the lower part of the display screen, the snail
Adjusting knob is installed on the traversing through end of bar；
The light that the laser issues after reflecting mirror reflection, projection of the optical path on the bottom plate with it is described
The angle of projection of second reflective mirror on the bottom plate is acute angle；
The light that the laser issues to the reflecting mirror, the reflecting mirror again reflection laser to first reflective mirror simultaneously
Roundtrip forms optical path between first reflective mirror and second reflective mirror, and the display screen is arranged in the optical path
End.
As an improvement the optical path, which is equipped with laser display position, adjusts mirror, the laser display position adjusts mirror
Vertically be arranged on the top plate, laser through first reflective mirror or second reflective mirror last time reflect after,
Mirror is adjusted by the laser display position, the laser display position adjusts mirror and reflects the laser light on the display screen.
As a further improvement, the top plate is equipped with guide rail, the extending direction of the guide rail and described first reflective
The extending direction of mirror is consistent, and the laser display position adjusts mirror and is slidably mounted on the guide rail.
As a further improvement, the guide rail is equipped with sliding block, and the laser display position adjusts mirror and the sliding block
Between be equipped with angle adjustment device, the adjustable laser display position of the angle adjustment device adjusts the horizontal angle of mirror
Degree, to change the position of laser irradiation on the display screen.
As a further improvement, it is plane, the laser display position that the laser display position, which adjusts the reflecting surface of mirror,
It sets and is additionally provided with one word of laser display mirror in the optical path adjusted between mirror and the display screen, one word of laser shows mirror pair
Laser beam carries out horizontal broadening.
As a further improvement, one word of laser shows that mirror is mono- wordline lens of Bao Weier.
As a further improvement, it is vertically arranged cylindrical surface that the laser display position, which adjusts the reflecting surface of mirror,.
As an improvement the optical lever measuring device further includes range-measuring circuit, the range-measuring circuit includes pulse tune
Circuit processed, laser receive circuit, control and signal processing circuit and display circuit；
When needing to measure optical path length, manually boot the control and signal processing circuit, the control at signal
It manages circuit and issues trigger signal, the pulse modulated circuit issues pulse drive signal to the laser, the laser hair
In laser irradiation out to the display screen, the reflected light of the display screen receives circuit by the laser and receives, and is transferred to institute
Control and signal processing circuit are stated, the control and signal processing circuit utilize trigger signal and the laser return signal received
Time difference to calculate light path, and calculated result is transferred on the display circuit；
When not having trigger signal, the pulse modulated circuit exports normal level and the laser is driven continuously to send out
Light.
As an improvement the worm gear is worm sector.
After above-mentioned technical proposal, the beneficial effects of the present invention are:
Since optical lever measuring device devises bottom plate, top plate, laser, support leg, arranged in parallel first instead
Light microscopic and the second reflective mirror, reflecting mirror, with graduated display screen and support；Thus in measurement, support leg is placed in tested
The upper surface of object, when minor change occurs for testee length, support leg is with minute movement is done, and laser can be around water at this time
The rotation of flat axis, the light that such laser issues to reflecting mirror, reflecting mirror again upward reflection laser to first reflective mirror and
Multiple reflections back and forth between first reflective mirror and second reflective mirror, are finally projected on display screen, just will be micro-
Thin tail sheep zooms into biggish displacement of the lines.Due to reflecting mirror reflection light first reflective mirror and second reflective mirror it
Between between roundtrip, to increase the light path of laser optical path, that is, increase the amplification factor of optical lever, so increase
The measurement sensitivity and accuracy of optical lever；While increasing laser light path, and because increasing light path is by multiple
What reflection obtained, the distance between the first reflective mirror and the second reflective mirror can not need too greatly, so ensure that the feed rod body of rod
Product is compact, occupies little space, therefore same laboratory can accommodate more experimental facilities, can allow and more people while do
Experiment, substantially increases the utilization rate in laboratory.In addition, the optical lever measuring device can directly be read by display screen,
Therefore convenient reading can observe the process of the variation read when length variation.
Since reflecting mirror is installed in one perpendicular on the column of the bottom plate, the lower part of the column is fixedly installed with snail
It takes turns, the worm screw being meshed with the worm gear is additionally provided on the bottom plate, the worm screw is horizontally disposed and its end is pierced by described show
The lower part of display screen is installed with adjusting knob on the traversing through end of the worm screw, thus so that worm screw is driven snail by rotating adjusting knob
Wheel rotation, horizontally rotates so that column and reflecting mirror be driven to do, and can make the light of laser sending after reflecting mirror reflects in this way,
The angle of projection projection with second reflective mirror on the bottom plate of its optical path on the bottom plate changes, in turn
Order of reflection of the adjustable laser between the first reflective mirror and the second reflective mirror, to adjust from laser to display screen
Total optical path to change the amplification factor of measuring device, and then adapts to the measurement of a variety of tiny lengths.
A kind of optical lever measuring device accuracy provided by the invention is high；Operation and convenient reading, and object can be observed
The process for the variation that body length is read when changing；Measurement efficiency is high；It occupies little space, is conducive to the space utilization for improving laboratory
Rate.
Mirror is adjusted since the optical path is equipped with laser display position, the laser display position adjusts mirror and is vertically arranged
On the top plate, laser swashs after first reflective mirror or second reflective mirror last time reflect by described
Light display position adjusts mirror, and the laser display position adjusts mirror and reflects the laser light on the display screen, thus passes through laser
Display position, which adjusts mirror, can change the position of laser irradiation on a display screen.
Since the top plate is equipped with guide rail, the laser display position adjusts mirror and is slidably mounted on the guide rail, because
And the position for changing laser display position and adjusting mirror that can be convenient.
It is equipped with angle adjustment device between mirror and the sliding block since the laser display position is adjusted, passes through angular adjustment
Device can change laser display position and adjust the angle of mirror, to change the reflection angle of laser, adjust laser irradiation aobvious
Position in display screen.
One word of laser is additionally provided in the optical path between mirror and the display screen since the laser display position is adjusted
Show that mirror facilitates reading so that laser is in that a word is shown on a display screen.
It, can be by laser facula in display screen level since the reflecting surface that the laser display position adjusts mirror is cylindrical surface
It is unfolded on direction, facilitates reading.
Since the optical lever measuring device further includes range-measuring circuit, laser can accurately be calculated by range-measuring circuit
Light path.
Due to the worm gear be worm sector, can make in this way column as far as possible close to the second reflective mirror be arranged.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the enlarged structure schematic diagram of the first reflective mirror, support, trunnion axis, laser and support leg；
Fig. 3 is the enlarged structure schematic diagram of reflecting mirror, column, worm gear, worm screw and adjusting knob；
Fig. 4 is the equivalent schematic diagram for increasing the amplification factor of optical lever by increasing laser light path；
Fig. 5 is the structural schematic diagram that laser optical path projects on bottom plate in Fig. 1；
Fig. 6 is the structural block diagram of range-measuring circuit；
Fig. 7 is the structural schematic diagram of the embodiment of the present invention two；
Fig. 8 is the structural schematic diagram that one word of laser shows mirror in Fig. 7；
Fig. 9 is the structural schematic diagram of the embodiment of the present invention three；
In figure: 1- bottom plate, 2- top plate, 3- laser, 4- support leg, the first reflective mirror of 5-, the second reflective mirror of 6-, 7- reflection
Mirror, 8- display screen, 9- support, 10- trunnion axis, 11- column, 12- worm gear, 13- worm screw, 14- adjusting knob, 15- optical path, 16-
Laser display position adjusts mirror, and one word of 17- laser shows mirror, 18- guide rail, 19- sliding block, 20- angle adjustment device.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
As Fig. 1 to Fig. 3 jointly shown in, a kind of optical lever measuring device, including bottom plate 1, top plate 2, laser 3, support leg
4, the first reflective mirror 5 arranged in parallel and the second reflective mirror 6, reflecting mirror 7, with graduated display screen 8 and support 9,
One reflective mirror 5, the second reflective mirror 6 and display screen 8 are vertically arranged on bottom plate 1, and top plate 2 is arranged in 5 He of the first reflective mirror
Between the top of second reflective mirror 6, the reflective surface of the reflective surface of the first reflective mirror 5 and the second reflective mirror 6 is oppositely arranged.
Support 9 is fixedly mounted on the first reflective mirror 5, and trunnion axis 10, laser 3 one are equipped between laser 3 and support 9
End is fixedly connected with support leg 4, and the other end is Laser emission end (not marking in figure), and support leg 4 and Laser emission end are located at
The reflective surface of the two sides of first reflective mirror 5, Laser emission end and the first reflective mirror 5 is located at identical side, when support leg 4 is along perpendicular
To when movement, laser 3 can be rotated around trunnion axis 10.
Reflecting mirror 7 is installed in one perpendicular on the column 11 of bottom plate 1, and reflecting mirror 7 is arranged close to the second reflective mirror 6, column
In on bottom plate 1, the lower part of column 11 is fixedly installed with worm gear 12, is additionally provided on bottom plate 1 and is meshed with worm gear 12 for 11 rotational installations
Worm screw 13, worm screw 13 is horizontally disposed and its end is pierced by the lower part of display screen 8, is installed with adjusting rotation on the traversing through end of worm screw 13
Button 14；Preferably, worm gear 13 be worm sector, can make in this way column 11 as far as possible close to the second reflective mirror 6 be arranged.
After the reflection of reflecting mirror 7, projection of the optical path on bottom plate 1 and the second reflective mirror 6 exist the light that laser 3 issues
The angle of projection on bottom plate 1 is acute angle.
The light that laser 3 issues to reflecting mirror 7, reflecting mirror 7 again reflection laser to the first reflective mirror 5 and in the first reflective mirror
5 and second roundtrip between reflective mirror 6 form optical path 15, the end of optical path 15 is arranged in display screen 8.
In order to project laser smoothly on display screen 8, optical path 15 is equipped with laser display position and adjusts mirror 16, and laser is aobvious
Show that position adjusts mirror 16 and is vertically arranged on top plate 2, laser is anti-through the first reflective mirror 5 or 6 last time of the second reflective mirror
After penetrating, mirror 16 is adjusted by laser display position, laser display position adjusts mirror 16 and reflects the laser light on display screen 8.In this way,
Adjusting mirror 16 by laser display position can change position of the laser irradiation on display screen 8.
Its working principles are as follows:
In measurement, support leg 4 is placed in the upper surface of testee, when minor change occurs for testee length, branch
Support foot 4 is with minute movement is done, and laser 3 can be rotated around trunnion axis 10 at this time, the light that such laser 3 issues to reflecting mirror 7,
7 reflection laser of reflecting mirror to the first reflective mirror 5 and between the first reflective mirror 5 and the second reflective mirror 6 between multiple reflections back and forth,
It is finally projected on display screen 8, micro-displacement is just zoomed into biggish displacement of the lines.Since the light of the reflection of reflecting mirror 7 is first
Roundtrip between reflective mirror 5 and the second reflective mirror 6, to increase the light path of laser optical path, that is, increases optical lever
Amplification factor, and then increase the measurement sensitivity and accuracy of optical lever；While increasing laser light path, and because increase
Adding light path is obtained by multiple reflection, and the distance between the first reflective mirror 5 and the second reflective mirror 6 can not need too
Greatly, it so ensure that optical lever volume compact, occupies little space, therefore same laboratory can accommodate more experiments and set
It is standby, it can allow and more people while test, substantially increase the utilization rate in laboratory.In addition, the optical lever measuring device can
It is directly read by display screen 8, therefore convenient reading, the process of the variation read when object length variation can be observed.
Before measuring, make worm screw 13 that worm gear 12 be driven to rotate by rotating adjusting knob 14, to drive column 11 and anti-
It penetrates mirror 7 and does and horizontally rotate, the light that laser 3 can in this way issued is after the reflection of reflecting mirror 7, throwing of the optical path on bottom plate 1
The angle of projection of the shadow with the second reflective mirror 6 on bottom plate 1 changes, and then adjustable laser is in 5 He of the first reflective mirror
Order of reflection between second reflective mirror 6, to adjust from laser 3 to the total optical path of display screen 8, to change measuring device
Amplification factor, and then adapt to the measurement of a variety of tiny lengths.
It is as follows above by the principle for increasing the amplification factor that laser light path increases optical lever:
As shown in figure 4, in figure OC be since reflecting mirror 7 ing along laser optical path 15 arrival display screen 8 total optical path etc.
Imitate distance；AB is the knots modification of tested length；B is support leg 4 and testee tie point, and OB is the tie point and trunnion axis 10
The distance between axis；C is initial position of the laser on display screen 8, and laser is in display screen after D changes length for testee
Position on 8, CD are the variable quantity of display screen reading；Because the length of optical lever measurement changes all very littles, angle AOB is very
Small, so OA is approximately equal to OB, the knots modification of AB/OA=CD/OC, length can be acquired by following formula, AB=CD*
OA/OC, approximate: AB=CD*OB/OC, in formula as can be seen that when AB, OB are determined, OC increases, and CD also increases, CD
Increase, so that it may increase the sensitivity of optical lever.
In practical applications, the total length of light path, i.e., the length of above-mentioned OC can be calculated by the following two kinds mode.
First way are as follows: as shown in figure 5, L1 is the distance between the first reflective mirror 5 and the second reflective mirror 6 in figure, α is
The light that laser 3 issues is after the reflection of reflecting mirror 7, projection and the folder of second reflective mirror 6 vertical line of the optical path on bottom plate 1
Angle, L2 are optical path after the last time reflection of the second reflective mirror 6, the second reflective mirror 6 and laser display position adjust mirror 16 it
Between laser optical path distance, L3 is along laser optical path, and laser display position adjusts mirror 16 the distance between to display screen 8.Again
Because of laser angulation change amount very little in vertical direction, it is possible to which be approximately considered laser light path is in entire measurement process
It is identical.The light path of laser can be calculated with following formula: laser light path=L1*cos (α) * light order of reflection+L2+L3.
Wherein, L2 and L3 can according to laser display position adjust mirror 16 angle and its between the second reflective mirror 6 and display screen 8
Distance carry out calculate learn, details are not described herein.
The second way are as follows: as shown in fig. 6, optical lever measuring device further includes range-measuring circuit, range-measuring circuit includes pulse
Modulation circuit, laser receive circuit, control and signal processing circuit and display circuit, and laser receives the reception circuit senses of circuit
Device is arranged close to the position of 8 centre-height of display screen；When needing to measure optical path length, control and signal processing electricity are manually booted
Road, control issue trigger signal with signal processing circuit, and pulse modulated circuit issues pulse drive signal to laser 3, laser
In the laser irradiation to display screen 8 that device 3 issues, the reflected light of display screen 8 receives circuit by laser and receives, and is transferred to control and letter
Number processing circuit, control and signal processing circuit are calculated using the time difference of trigger signal and the laser return signal received
Light path, and calculated result is transferred on display circuit；When not having trigger signal, pulse modulated circuit exports normal level
Drive 3 continuous luminous of laser.In this way, can accurately calculate the light path of laser by range-measuring circuit.
It should be noted that above-mentioned pulse modulated circuit, laser receive circuit, control and signal processing circuit and display electricity
Road is techniques known, and details are not described herein.
Embodiment two
The present embodiment is basically the same as the first embodiment, the difference is that, as shown in fig. 7, top plate 2 is equipped with guide rail
18, certainly, guide rail 18 also may be mounted on bottom plate 1, the extending direction phase one of the extending direction of guide rail 18 and the first reflective mirror 5
It causes, laser display position adjusts mirror 16 and is slidably installed on the track 18.The change laser display position that can be convenient in this way is adjusted
The position of mirror 16 avoids occurring laser optical path because changing laser reflection angle and deflecting away from laser display position adjusting 16 range of mirror
Problem.
The reflecting surface that laser display position adjusts mirror 16 is plane, and guide rail 18 is equipped with sliding block 19, laser display position tune
It saves and is equipped with angle adjustment device 20 between mirror 16 and sliding block 19, angle adjustment device 20 is preferably shaft (not shown) etc.
Deng being well known to those skilled in the art, details are not described herein.The adjustable laser display position of angle adjustment device 20 is adjusted
The level angle of mirror 16, to change position of the laser irradiation on display screen 8.
As shown in fig. 7, the reflecting surface that laser display position adjusts mirror 16 is plane, laser display position adjusts mirror 16 and shows
It is additionally provided with one word of laser in optical path 15 between display screen 8 and shows mirror 17, it is horizontal that one word of laser shows that mirror 17 carries out laser beam
Broadening, as shown in Figure 8, so that laser is shown on display screen 8 in one word of level, facilitates reading.
Preferably, one word of laser shows that mirror 17 is mono- wordline lens of Bao Weier.
Embodiment three
The present embodiment and embodiment two are essentially identical, the difference is that, as shown in figure 9, laser display position is adjusted
The reflecting surface of mirror 16 is vertically arranged cylindrical surface, and is not provided with one word of laser and shows mirror 17, laser facula can shown
Shield and be unfolded in 8 horizontal directions, facilitates reading.
A kind of optical lever measuring device accuracy provided in an embodiment of the present invention is high；Operation and convenient reading, and can
The process of the variation read when observation object length variation；Measurement efficiency is high；It occupies little space, is conducive to the sky for improving laboratory
Between utilization rate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of optical lever measuring device, which is characterized in that including bottom plate, top plate, laser, support leg, arranged in parallel
The first reflective mirror and the second reflective mirror, reflecting mirror, with graduated display screen and support, first reflective mirror, described
Two reflective mirrors and the display screen are vertically arranged on the bottom plate, and top plate setting is in first reflective mirror and the
Between the top of two reflective mirrors, the reflective surface of first reflective mirror and the reflective surface of the second reflective mirror are oppositely arranged；
The support is fixedly mounted on first reflective mirror, and trunnion axis, institute are equipped between the laser and the support
It states laser one end and is fixedly connected with the support leg, the other end is Laser emission end, the support leg and the Laser emission end
It is located at the two sides of first reflective mirror, the reflective surface of the Laser emission end and first reflective mirror is located at identical
Side, when the support leg vertically moves, the laser can be rotated around the trunnion axis；
The reflecting mirror is installed in one perpendicular on the column of the bottom plate, and the reflecting mirror is set close to second reflective mirror
It sets, on the bottom plate, the lower part of the column is fixedly installed with worm gear, is additionally provided on the bottom plate for the column rotational installation
The worm screw being meshed with the worm gear, the worm screw is horizontally disposed and its end is pierced by the lower part of the display screen, the worm screw
Traversing through end on be installed with adjusting knob；
The light that the laser issues is after reflecting mirror reflection, projection of the optical path on the bottom plate and described second
The angle of projection of the reflective mirror on the bottom plate is acute angle；
The light that the laser issues to the reflecting mirror, the reflecting mirror again reflection laser to first reflective mirror and in institute
It states roundtrip between the first reflective mirror and second reflective mirror and forms optical path, the end of the optical path is arranged in the display screen
End；
The optical path is equipped with laser display position and adjusts mirror, and the laser display position adjusts mirror and the top is vertically arranged in
On plate, laser through first reflective mirror or second reflective mirror last time reflect after, by the laser display position
Adjusting mirror is set, the laser display position adjusts mirror and reflects the laser light on the display screen；The display screen is different from described
First reflective mirror, second reflective mirror.
2. optical lever measuring device according to claim 1, which is characterized in that the top plate is equipped with guide rail, described to lead
The extending direction of rail is consistent with the extending direction of first reflective mirror, and the laser display position adjusts mirror and is slidably mounted on
On the guide rail.
3. optical lever measuring device according to claim 2, which is characterized in that the guide rail is equipped with sliding block, described to swash
Light display position adjusts and is equipped with angle adjustment device between mirror and the sliding block, and the angle adjustment device is adjustable described sharp
Light display position adjusts the level angle of mirror, to change the position of laser irradiation on the display screen.
4. optical lever measuring device according to claim 3, which is characterized in that the laser display position adjusts the anti-of mirror
Penetrating face is plane, and it is aobvious to be additionally provided with one word of laser in the optical path between the laser display position adjusting mirror and the display screen
Show that mirror, one word of laser show that mirror carries out horizontal broadening to laser beam.
5. optical lever measuring device according to claim 4, which is characterized in that one word of laser shows that mirror is Bao Weier
One wordline lens.
6. optical lever measuring device according to claim 3, which is characterized in that the laser display position adjusts the anti-of mirror
Penetrating face is vertically arranged cylindrical surface.
7. according to claim 1 to optical lever measuring device described in any one of 6 claims, which is characterized in that described
Optical lever measuring device further includes range-measuring circuit, the range-measuring circuit include pulse modulated circuit, laser receive circuit, control with
Signal processing circuit and display circuit；
When needing to measure optical path length, the control and signal processing circuit, the control and signal processing electricity are manually booted
Road issues trigger signal, and the pulse modulated circuit issues what pulse drive signal was issued to the laser, the laser
In laser irradiation to the display screen, the reflected light of the display screen receives circuit by the laser and receives, and is transferred to the control
System and signal processing circuit, the control and signal processing circuit using trigger signal and the laser return signal received when
Between difference to calculate light path, and calculated result is transferred on the display circuit；
When not having trigger signal, the pulse modulated circuit exports normal level and drives the laser continuous luminous.
8. according to claim 1 to optical lever measuring device described in any one of 4 claims, which is characterized in that described
Worm gear is worm sector.
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| CN109490307B (en) * | 2019-01-24 | 2023-11-03 | 沈阳工程学院 | Device for measuring metal linear expansion coefficient based on small hole imaging |
| CN109764804A (en) * | 2019-02-26 | 2019-05-17 | 江苏弘开传感科技有限公司 | A kind of displacement sensor based on Fabry-Perot principle |
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| CN201903327U (en) * | 2010-12-17 | 2011-07-20 | 刘晓旻 | Free space micro optics optical lever system for nanoscale micro-displacement measurement |
| CN102175162A (en) * | 2011-03-02 | 2011-09-07 | 江南大学 | Laser optical lever |
| CN105783738A (en) * | 2016-05-19 | 2016-07-20 | 北方民族大学 | Incremental type small-measurement-range displacement sensor and measurement method |
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